Knife holder for comminution devices

Abstract

The invention refers to a knife holder for comminution devices, comprising a tooth body ( 1 ) which can be fastened on a comminution cylinder or the like, and at least one knife ( 2 ), the knife ( 2 ) being able to be arranged positive-locking on the tooth body ( 1 ). The invention is characterized by the fact that a knife receiving device is provided, the knife receiving device ( 3 ) is designed as recess ( 4 ), and, seen from the side, has the shape of a J, and the recess ( 4 ) is designed wedge-like or conically, preferably tapering-off to the outside in such a way that recess surfaces ( 4/1, 4/2 ) occur.

1. Knife holder for comminution devices, comprising a tooth body which can be fastened on a comminution cylinder, and a knife receiving device being provided in the tooth body for receiving at least one knife, wherein the at least one knife being able to be attached through positive-locking to the tooth body, characterised in that the knife receiving device is a recess, and, seen from the side, is in a J-shape, and the recess is in a wedge or conical shape. 
     
     
       2. The knife holder according to  claim 1 , characterised in that the tooth body is adapted to allow the knife to be attached to the tooth body in a fixed, releasable way and/or the knife holder is adapted to allow at least a part of the knife to be put in the knife holder. 
     
     
       3. The knife holder according to  claim 1 , characterised in that the knife holder is arranged at the front end of the tooth body seen in the direction of cutting and/or the recess has at its front end, seen in the direction of cutting, a nose, and/or the recess has at its front end, seen in the direction of cutting, a nose and the nose of the recess is in a cylinder shape. 
     
     
       4. The knife holder according to  claim 1 , characterised in that a part of the tooth body comprises a supporting body with supporting surfaces which are in a wedge or conical shape and the supporting surfaces are provided on a side of the supporting body facing the knife. 
     
     
       5. The knife holder according to  claim 1 , characterised in that the tooth body has shapes which correspond with the knife and the tooth body is fastened on, the comminution cylinder of the comminution device by welding or the tooth body is arranged on the comminution cylinder. 
     
     
       6. The knife holder according to  claim 1 , characterised in that the tooth body has on its bottom surface, respectively on the surface facing the comminution cylinder, a centering device for centering the cylinder or a centering device is provided and the centering device of the tooth body is designed as groove or tongue, which interacts with a tongue or groove provided on the comminution cylinder in 
     
     
       7. The knife holder according to  claim 1 , characterised in that tooth body has fastening means by means of which it can be fastened to the knife in a fixed, releasable way, and/that the fastening metals is presented by at least one screw connection which is guided by a boring in the tooth body and in the knife, whereas the boring has a diameter of 23 ram. 
     
     
       8. The knife holder according to  claim 1 , characterized in that the tooth body is made of metal as castings and/or the tooth body has side surfaces and the side surfaces of the tooth body taper off diagonally upward, taper or taper off to the outside radius, respectively, and/or the tooth body is designed narrower opposite the cutting direction than at the cutting edge. 
     
     
       9. The knife holder according to  claim 1 , characterized in that the outside radius of the tooth body cuts on the outside radius of the comminution cylinder on its side opposite to the knife receiving device and/or the knife receiving device is designed in such a way that knives of differing shapes, including triangle, rectangular or polygon knives, can be put in, respectively attached. 
     
     
       10. A comminution device with at least one knife holder according to  claim 1 . 
     
     
       11. A comminution device with at least one knife holder according to  claim 1 , characterised by a number of knife holders which are arranged on the comminution cylinder staggered to each other. 
     
     
       12. The knife holder according to  claim 5 , wherein the tooth body is arranged on the comminution cylinder angularly staggered to another tooth body on the comminution cylinder. 
     
     
       13. An assembly of a knife and a knife holder for comminution devices, comprising:
 the knife being designed as a tooth; and 
 the knife holder comprising a tooth body which can be fastened on a comminution cylinder, and a knife receiving device being provided in the tooth body for receiving the knife, wherein the knife is able to be attached through positive-locking to the tooth body, and wherein the knife receiving device is a recess, and seen from the side is in a J-shape, and the recess is in a wedge or conical shape. 
 
     
     
       14. The assembly according to  claim 13 , characterized in that the knife is attached to the tooth body in a fixed, releasable way. 
     
     
       15. The assembly according to  claim 13 , characterized in that the knife is made of metal as casting. 
     
     
       16. The assembly according to  claim 13 , characterized in that the tooth has a knife-edge and is designed concave on the side oriented in a direction of cutting. 
     
     
       17. The assembly according to  claim 13 , characterized in that the tooth has a radius on its side opposite to the tooth body which cuts the radius of the comminution cylinder, respectively of the cylinder body, and wherein the radius of the tooth on the side opposite to the tooth body can be adapted to differing heights of teeth. 
     
     
       18. The assembly according to  claim 13 , characterized in that the tooth body has a supporting body and at the tooth a supporting region is provided which is supported by the supporting body, and wherein at the supporting region supporting surfaces in a conical or wedge shape are provided in which the tooth is designed wider than the tooth body, in such a way that the result is free cutting. 
     
     
       19. The assembly according to  claim 13 , characterized in that the tooth is in conical or wedge shape, on the sides facing the tooth body corresponding with the recess surfaces and the supporting surfaces, in such a way that auto-centering is the result of the positive-locking connection during fastening the tooth. 
     
     
       20. The assembly according to  claim 13 , characterized in that the tooth has a placed- upon knife-edge which is made from hard metal, and/or wherein the size of the tooth can be adapted because of differing comminution problems, and the height, measured between the tip of the knife-edge and the out side radius of the communition cylinder, has between 100 mm and 200 mm. 
     
     
       21. The assembly according to  claim 13 , characterized in that the tooth has at least one hardened region on its edges orientated in the direction of cutting, and/or the at least one hardened region has been obtained by arming or welding-on, and/or the tooth is designed in two pieces from a first cutting body and a second cutting body. 
     
     
       22. The assembly according to  claim 13 , characterized in that the tooth is designed in two pieces from a first cutting body and a second cutting body, wherein the first cutting body is flat, respectively plane. 
     
     
       23. The assembly according to  claim 13 , characterized in that the tooth is designed in two pieces from a first cutting body and a second cutting body, wherein each of the first cutting body and the second cutting body is in a disc shape and/or provided with an opening, which embraces in built-in condition a nose, in which the second cutting body is designed as interchangeable disc, and/or wherein the second cutting body is designed as interchangeable disc and wherein the interchangeable disc has a thickness of 20 mm, and/or wherein the second cutting body is designed as an interchangeable disc and the interchangeable disc has the shape of a triangle which is flattened on the side on top in built-in condition in such a way that the interchangeable disc has the shape of a trapezoid. 
     
     
       24. The assembly according to  claim 13 , characterized in that two recess counter surfaces on the tooth face the tooth body and are orientated downward to the recess, and the inclination of these two recess counter surfaces corresponds with that of a first part of the recess; and two supporting counter surfaces on the tooth face the tooth body and are orientated horizontally, and the inclination of these two supporting counter surfaces corresponds with that of a second part of the recess.